getter added

frontend-js/src/main/js/map/data/Alias.js

@@ -141,6 +141,10 @@ Alias.prototype.setY = function(y) {
   this.y = y;
 };
 
+Alias.prototype.getY = function() {
+  return this.y;
+};
+
 Alias.prototype.setWidth = function(width) {
   this.width = width;
 };